After being repaired, a machine functions for an exponential timewith rate λ and then
fails. Upon failure, a repair process begins. The repair processproceeds sequentially
through k distinct phases. First a phase 1 repair must beperformed, then a phase 2,
and so on. The times to complete these phases are independent, withphase i taking
an exponential time with rate μi, i = 1; ; k.

(a) What proportion of time is the machine undergoing a phase irepair?
(b) What proportion of time is the machine working?

the answer would be 1 1/72

step-by-step explanation:

you can rewrite the equation by separating the parts and then solving individually:

10-9=1

1/8 - 1/9=

find l c d and then combine:

1 1/72

students group

step-by-step explanation:

a person who   joins a party or a seminar can explain his feelings about that particular occasion better more than anyone else.

as bella managed a show for the students in the school and invited students to watch that show

hence

students group will be the best group to survey to find this information

sweetheart, there isn't a cube below.